Earthquake Los Angeles Now

We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment). Jones, a research associate at Caltech’s seismological lab, said the quake struck in the Mendocino fracture zone, just offshore from Cape Mendocino in Humboldt County. It occurred in a type of fault in which tectonic plates move sideways, and when that occurs beneath the ocean’s surface, little water is displaced, negating the chance of a tsunami, Jones said. Earthquakes that shake vertically can lead to tsunami warnings, she said.

An early-alert system designed to give people crucial seconds of warning before earthquakes lived up to its promise on Monday. It buzzed through a half a million phones ahead of a 6.2 magnitude earthquake that hit northwest California — the largest quake since the system, called ShakeAlert, rolled out across the entire state, The Guardian reported. The epicenter of Monday’s earthquake was off the coast of a small town called Petrolia, and around 45 miles from the nearest population center, Eureka. People reported getting alerts around 10 seconds before shaking started, Robert de Groot, a ShakeAlert coordinator with the USGS, told The Guardian, making it a successful proof of concept for the first substantial earthquake handled by the system. The quake didn’t do major damage to the area, and there were no fatalities. The ShakeAlert system was first introduced in Los Angeles in 2018, before expanding to all of California in 2019. The system was in place in LA when a 6.4 magnitude earthquake hit around 150 miles outside of the city, but didn’t set off an alert because the expected shaking in the city wasn’t strong enough to cross the app’s threshold. Users complained they didn’t get an alert even though they felt shaking, so the app’s developers lowered the threshold before the state-wide rollout. The Los Angeles metro area was hit with a 3.6 magnitude earthquake Sunday, according to data from the United States Geological Survey. (Source: edition.cnn.com)



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